What is a County School? County schools in Kenya fall below extra-county schools in the national school ranking. There are hundreds of extra county schools in Kenya. County school institutions are part of the four-tier secondary school system in the country. This article lists the county schools in Nyamira county in no particular order.
Some of these schools are the best performing county schools in the region.
| School Code | School Name | Category | Type | County |
| 43706103 | NYAMAIYA SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43706112 | MOTAGARA GIRLS SECONDARY SCHOOL | County | Girls | Nyamira |
| 43706122 | MASOSA MIXED SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43706129 | MARANI P.A.G GIRLS SECONDARY SCHOOL | County | Girls | Nyamira |
| 43706135 | GEKOMONI SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43715101 | ESANI SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43715108 | RIGOMA SECONDARY SCHOOL | County | Girls | Nyamira |
| 43715114 | OMOYO GIRLS HIGH SCHOOL | County | Girls | Nyamira |
| 43720101 | MECHEO SDA MIXED SECONDARY | County | Mixed | Nyamira |
| 43720103 | MANGA GIRLS HIGH SCHOOL | County | Girls | Nyamira |
| 43720104 | ST. THOMAS MOORE | County | Mixed | Nyamira |
| 43720108 | ST. GONZAGAGONZA ISOGE | County | Mixed | Nyamira |
| 43720117 | ERONGE SDA SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43722132 | MANGA GIRLS MODEL SCHOOL | County | Girls | Nyamira |
| 43728102 | GEKENDO SECONDARY SCHOOL | County | Boys | Nyamira |
| 43728106 | IKONGE P A G SECONDARY SCHOOL | County | Girls | Nyamira |
| 43728107 | IKONGE BOYS SECONDARY SCHOOL | County | Boys | Nyamira |
| 43728111 | ST. JOSEPH’S BIEGO SECONDARY SCHOOL | County | Mixed | Nyamira |
| 43728114 | KIABONYORU SECONDARY SCHOOL | County | Boys | Nyamira |
| 43728129 | KIABONYORU GIRLS SECONDARY SCHOOL | County | Girls | Nyamira |
| 43728207 | NYAMUSI GIRLS SECONDARY SCHOOL | County | Girls | Nyamira |
| 43728209 | MOGONGO GIRLS’ SECONDARY SCHOOL | County | Girls | Nyamira |
All the county schools in Kenya admit students majorly from within the County they are located in. Admission of form ones is done through the Education Ministry’s Portal and the admission letters to these schools are downloaded from the Ministry’s website.